Cmr Surgical Limited

Cambridge Medical Robotics Limited

Nikki Priyam Su-Ling Phoolchund

Keith Marshall

Thomas Bates Jackson

Ben Robert Chaplin

Luke David Ronald Hares

Rebecca Anne Cuthbertson

James Oliver Grant

Andrew Murray Scholan

Dominic Martin McBrien

Jonathan Peter Whittle

Paul Christopher Roberts

Christopher James Roach

A surgical robotic drape for enveloping a portion of a surgical robot that comprises an instrument having at least one joint, and a robotic arm comprising a drive assembly configured to provide mechanical drive for selectively actuating the at least one joint, the instrument and drive assembly each having a plurality of interfaces for coupling mechanical drive from the drive assembly to the instrument, the drape comprising: a covering for enveloping the surgical robot drive assembly to define a sterile boundary thereover; and a plurality of interface elements each configured to engage with both a drive assembly interface and an instrument interface to couple the drive assembly to the instrument to thereby transfer mechanical drive provided by the drive assembly through the drape to selectively actuate the at least one joint of the instrument, the plurality of interface elements being attached to the covering in a spatial arrangement so that each of the plurality of interface elements is separated from each of the other plurality of interface elements by material of the covering.

Surgical drape for transferring drive

A drive transfer element for transferring drive between a surgical robot arm and a surgical instrument, the drive transfer element comprising a drive transfer element recess being releasably engageable with an interface protrusion; and a drive transfer element protrusion being releasably engageable with an interface recess; the drive transfer element protrusion comprising a cavity in communication with the drive transfer element recess so as to enable the interface protrusion engageable with the drive transfer element recess to project into the cavity.

Drive transfer

A surgical robot arm extending between a base and a terminal link, the terminal link connected to an adjacent link in the surgical robot arm by a joint which permits the terminal link to rotate about a longitudinal axis of the terminal link, the terminal link comprising: a drive assembly having a first drive assembly interface element for driving a first instrument interface element of a robotic surgical instrument when the surgical robot arm engages the robotic surgical instrument, the first drive assembly interface element engageable with the first instrument interface element on the longitudinal axis of the terminal link, and the first drive assembly interface element being linearly displaceable along the longitudinal axis of the terminal link so as to drive the first instrument interface element along the longitudinal axis of the terminal link.

Drive assembly interface

An interface structure for detachably interfacing a surgical robot arm to a surgical instrument, the interface structure comprising: a base portion comprising a first surface for facing the surgical instrument and a second surface for facing the surgical robot arm; and a plurality of first fasteners supported by the base portion and protruding from the first surface, the plurality of first fasteners configured to engage the surgical instrument so as to retain the interface structure to the surgical instrument. The interface structure engages the surgical robot arm so as to retain the interface structure to the surgical robot arm, wherein the plurality of first fasteners and the remainder of the interface structure are shaped such that when the surgical instrument is detached from the surgical robot arm the interface structure is retained to the surgical robot arm.

Interfacing a surgical robotic arm and instrument

An interface structure for detachably interfacing a surgical robot arm to a surgical instrument, the interface structure comprising a main body; and a drive transfer element comprising a first portion and a second portion, the first portion being releasably engageable with a portion of the surgical robot arm and the second portion being releasably engageable with a portion of the surgical instrument; the drive transfer element being movable relative to the main body so as to enable transfer of drive between the surgical robot arm and the surgical instrument.

Interface structure

A motion feedthrough for a surgical drape, the motion feedthrough comprising a drive transfer element comprising a first portion and a second portion, the first portion being releasably engageable with a portion of a robot arm and the second portion being releasably engageable with a portion of an instrument, the drive transfer element being movable relative to a bulk portion of the drape so as to transfer drive between the robot arm and the instrument.

Motion feedthrough

A surgical drape for covering at least a portion of a surgical robot arm, the arm comprising at least one drive assembly interface element for transferring drive between the arm and an instrument engageable with the arm, the drape comprising an interface portion locatable between the arm and the instrument when the instrument is engaged with the arm; and a bulk portion encompassing the interface portion; the interface portion and the bulk portion being adjacent one another, the interface portion comprising one or more of a material or configuration having a lower modulus than that of the bulk portion in at least one direction, and a movable portion, the movable portion being movable relative to the bulk portion, so as to permit repeatable movement of a portion of the interface portion relative to the bulk portion.

Surgical drape

A robot arm comprising a plurality of limbs articulated relative to each other, the robot arm extending from a base to a distal limb carrying a tool or an attachment point for a tool, the distal limb being attached by a revolute joint to a second limb, and the robot arm comprising a motor having a body and a drive shaft configured to drive rotation of the distal limb relative to the second limb about the revolute joint, wherein the body of the motor is fast with the distal limb.

Drive arrangements for robot arms

A locator of a surgical port of a surgical robot system, the surgical robot system comprising an instrument attached to a robot arm, the instrument having an instrument shaft able to pass through the surgical port to a surgical site, the locator comprising: an interface configured to couple to the surgical port; a mechanism configured to permit relative linear and/or rotational motion of the interface and the instrument shaft; and a controller comprising a processor operable to estimate the position of a part of the robot arm, the controller configured to control the mechanism in dependence on the estimated position of the part of the robot arm such that as the robot arm retracts the instrument from the patient, the locator moves the port away from the robot arm and provides a reaction force to keep the port in place.

Port control

A robotic surgical instrument comprising: a shaft; an articulation at a distal end of the shaft configured to articulate an end effector, the articulation driveable by a pair of driving elements; and an instrument interface at a proximal end of the shaft, the instrument interface comprising: an instrument interface element configured to drive the pair of driving elements, the instrument interface element displaceable over a displacement range, the pair of driving elements fast with the instrument interface element such that a displacement of the instrument interface element is transferred to the pair of driving elements; a tensioning mechanism configured to tension the pair of driving elements; and an alignment mechanism configured to set the displacement position of the instrument interface element to a predetermined alignment position when the end effector has a predetermined configuration, the alignment mechanism being independent of the tensioning mechanism.

Growing community of inventors

Cambridge, United Kingdom

Nikki Priyam Su-Ling Phoolchund